Metal-working machine.



No. 68!,845. Patented Sept. 3, I901. W. S. DAVENPORT.

METAL WORKING MACHINE.

(Application filed Jan. 2, 1901.)

(No Model.) 7 Sheets-Sheet l.

Witnesses. I nventor.

fwd 7t Attorney.

m: nonms P: rERs cow Pnoroumo, wasmnot'ou. n. c,

N0. 68!,845. Patented Sept. 3, l90l.

w s. DAVENPORT.

METAL WORKING MACHINE.

(Application filed Jan. 2, 1901.)

(No Model.) 7 Sheets-Sheet 2.

Q Q s Witnesses.

@i Wi/MM dmsukor, Q WJL JMW 7 M zw Attorney.

.TNE Noams FEYERS co.. wuoraumoh wasmnowu. u c.

No. 681,845. Patented Sept. 3, l90l. W. S. DAVENPORT.

METAL WORKING MACHINE.

(Application flledJan. 2, 1901.) (No Model.) 7 Sheets-Sheet 3.

W'itngesses. Inventor.

3121a ijd I M4 JW 1% J 25,214

Attorney.

Tm: Nonms FEYERS cu. rworoumowunmmon. n. n.

Nu. 68l,845. Patented Sept. 3, l90l. W. S. DAVENPORT.

METAL WORKING MACHINE.

(Application filed Jan. 2, 1991-) (No Model.) 7 Sheets-Sheet 4.

I JJ 5 I 11 Q e a E W, W W/ E Q E6 s i Witnesses. I nventor.

Attorney.

No. 68!,845. Patented Sept. 3, 1901. w. s. DAVENPORT.

METAL WORKING MACHINE.

[Application filed Jan. 2, 1901.)

(No Model.) 7 Sheets-Sheet 5.

Witnesses. I nventor fi zzi f @QQJ W MM imp Attorney.

as noams wn'cns on. pnovaumm WASNINGTDN n c No. 68l,845. Patented Sept.3, I90l. W. S. DAVENPORT.

METAL WORKING MACHINE.

(Application filed Jan. 2, 1901.)

7 Sheets$heet 6.

(No Model.)

Inventor Attorney Witnesses.

No. 685,845. Patented Sept. 3, I901.

W. S. DAVENPORT.

METAL WORKING MACHINE.

(Application filed Jan. 2, 1901.) (No Model.)

7 Sheets-$heet 7.

- 75 Inventor.

I, m Ww/ M Attorney.

UNitnD STATES PATENT OFFICE.

\VILLIAM S. DAVENPORT, OF NEW BEDFORD, MASSACHUSETTS.

METAL-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 681,845, datedSeptember 3, 1901. Application filed January 2,1901. Serial No. 41,796.(No model.)

To all whom, it may concern:

Be it known that I, WILLIAM S. DAVEN- PORT, of New Bedforcl, in thecounty of Bristol and State of Massachusetts, have invented a certainnew and useful Metal-Working Maehine,of which the followingisaspecification.

The purpose of the inventionis to provide mechanism for automaticallyassembling and turning articles or pieces of Work which consist of acentral shaft or rod and one or more disks or blanks carried by saidrod. Articles or pieces of this nature are extensively used in themanufacture of clocks and other mechanisms wherein small gears andpinions are employed, and heretofore the assembling of the parts of sucharticle or piece and the turning and finishing of the same preparatoryto securing the gears to the blanks or centers or forming the teeth ofthe gears or pinions when the disks are used as supports for the wiresof lantern-gears involved the use of several machines and of successivehandlings of the article and also care and skill on the part of theoperator in turning and completing the article. XVith the presentinvention the operations involved in assembling the parts of the articleand in turning and finishing the same are performed by mechanismsoperatively connected and combined to automatically assemble the partsof the article and turn them to the desired form and size.

The specific construction and arrangement of the mechanisms foreffecting or performing the operations hereinafter referred to is notmaterial to the invention, as any suitable mechanisms may be employedwhich are so organized and arranged that they will act to automaticallyperform the operations referred to. Neither is it essential that a machine embodying the invention shall contain mechanisms for effecting orperforming all the operations hereinafter referred to, as in some casesit may be found desirable to combine mechanisms for performing a partonly of the operations.

In explaining the invention more fully I will refer to its applicationto the 1nanufacture of the parts or pieces called staffs, which are usedin the manufacture of clocks, and consist of small steel shafts havingpintles or pivots formed at their ends and carrying one or more brassdisks forming 'cen ters, to which the thin brass gears are secured orblanks for holding the wires of Iantern-pinions. Heretofore in producinga piece of this character it has been customary to first cut the shaftsfrom a rod of stock in a cutting-off machine, leaving them a littlelonger than the finished piece, then to point the ends so that the shaftmay be supported in the female centers of a lathe, then to force on thebrass blanks in a special machine, then to turn the blanks and the endsof the shaft to form the pivots or pintles, making notches at the pointswhere the ends should be broken 0K to ive the piece the proper length,then to po ish or burnish the pintles with a hand burnishing-tool, andthen to break off the ends of the pintles to give the piece the properlength. This-method of making the pieces is slow and expensive,requiring successive handlings of the piece and also requiring skill onthe part of the operator in turning and finishing the blanks andpintles. In the machine embodying the present invention mechanisms forholding and revolving the shaft, for forcing the blank or blanks ontothe shaft and for turning the blanksor shaft are combined toautomatically assemble the shaft and blank or blanks and to turn theblanks or shaft to the size and shape required, and in case the shaft isto be turned to form pintles the machine may be, and preferably is,provided with mechanism cooperating with the other mechanisms toantomatically perform this operation, and in case the pintles are to bepolished or burnished the machine may be, and preferablyis, alsoprovided with mechanism cooperating with the other mechanisms toautomatically perform this operation. The mechanism for holdingandrevolving the shafts preferably consists of a spindle provided with achuck for holding the rod of stock from which the shafts are cut, anditis preferred to form successive shafts by feeding a rod of stockthrough the chuck the required distance to makeashaftafter the precedingshaft has been severed from the end of the rod of stock. Theblanks arepreferably carried in blank-carriers, and in case more than one blank isto be forced onto rod of stock it is also preferred a series ofcarriers, which are suethe shaft or to employ ICO cessively brought intoposition in line with the shaft and advanced to force the blanks carriedthereby onto the rod of stock. The cutters for turning the blank orblanks and for turning the pintles on the shaft or rod are thensuccessively brought into position to act upon the blanks and rod,during which time it is preferred to support the outer end of the rod orshaft. The mechanism for polishing or burnishing the pintles is thenbrought into operation, after which the shaft is severed from the end ofthe rod of stock, and said rod is again fed forward through the chuckthe required distance to make another shaft, and the operations arerepeated.

In the accompanying drawings I have shown a machine embodying all thefeatures of my invention and adapted to automatically perform any. orall the operations above referred to, and in describing the constructionof this machine I will refer to its mode of operation in automaticallyassembling and finishing a stafi having burnished pintles and providedwith three blanks, one of which is a center fora thin gear and the othertwo the sides of a lantern-pinion.

The machine which I have shown, in addition to the features of inventionalready outlined, embodies other features of inventions relating to thecombinations of elements entering into the different mechanisms which Ihave preferred to use in effecting the operations involved in employingthe main features of the invention. These features and combinations willbe more particularly referred to in the claims.

In the drawings, Figure 1 is a plan view of the machine. Fig. 2is afront elevation. Fig. 3 is an end View. Fig. 4 is a transverse sectionalview showing the mechanism for operating the cross-slides. Fig. 5 is atransverse sectional view showing the mechanism for operatingturret-slide F. Fig. 6 is a detail view showing thespindle-operatingclutch. Figs. 7 and 8 are detail views showing theblank-carrying magazine. Fig. 9 is a view showing the article formed bythe ma chine. Fig. 10 is a sectional view showing the mechanism forindexing the turret 0. Figs. 11 and 12 are details of said mechanism,and Fig. 13 is a detail of the mechanism for controlling thespeed-changing clutch.

The rod of stock 15, from which the shafts s are severed, is held androtated by a chuck carried by aspindle A, thejaws of said chuck beingopened to allow the feed of the stock and being closed to hold the stockby the action of a lever 0,, the upper end of which is connected with aring a, carried by a sleeve a and the lower end of which is arranged inthe path of cams a carried by a drum 13, secured to a cam-shaft A". Therod of stock is fed at the proper time by means of a feeding-tube b,which is connected by an arm Z) with slide 29*, mounted on a guideway bthe slide being reciprocated to advance and retract the feeding-tube bya lever b the which is secured to a cam-shaft A upper end of which isconnected with the slide and the lower end of which is arranged in thepath of cams 12 secured to the drum B, so that as the drum rotates thelever is oscillated about its pivot. The feeding-tube, the chuck, andthe devices for operating the jaws of the chuck from the sleeve a may beof any well-known constructionsuch, for instance, as shown in the PatentNo. 514,441, dated February 13, 1894, or in Patent No. 604,306, datedMay 17, 1898-and the specific construction of these devices is not shownand need not be described, being well understood.

The spindle A is rotated by means ofa conepulley A, loosely mounted onthe spindle and connected therewith through a clutch A keyed to slide ona sleeve A secured to the spindle, the clutch being forced intoengagement with the end of the pulley by a spring A and being disengagedfrom the pulley when the rotation of the spindle is to be arrested by alever A the upper end of which is connected with a ring A, carried bythe clutch, and the lower end of which is acted upon by a cam A mountedon a drum A The parts are so timed that after a shaft has been severedfrom the end of the rod of stock by mechanism to be described the jawsof the chuck are opened and the rod fed forward the proper distance,after which the jaws are closed to clamp the rod. The disks 'w w 10 arethen forced onto the rod or shafts at the end of the rod, clutch A beingdisengaged from the pulley A during this operation, so that the rod isnot revolved while the disks or blanks are being forced on.

The blanks are forced onto the rod of stock or shaft by carriers in theform of magazines 0 c 0 which are supported on a drum or turret C,mounted to rotate upon a slide 0, which is reciprocated to force theblanks onto the rod, the turret being given a partial rotation orindexed after each advance movement of the slide to bring the carrierssuccessively into position in line with the rod or shaft. The magazinesconsist of chutes or guidetubes in which the blanks are arranged oneabove another, the lower blank resting upon a support 0 at the bottom ofthe tube and being retained in position by spring-fingers c, as shown inFigs. 7 and 8. When a guidetube is brought into position in front of therod 15, the hole in the lower blank registers with the rod, so that whenthe turret-slide advances the rod passes through said hole and the blankis forced onto the rod a distance depending upon the forward movement ofthe slide. When the slide is retracted, the

fingers 0 yield and allow the lower blank to pass out of the tube, theblank above dropping down upon the support 0 ready to be forced onto'the rod when the tube is again brought into position and the slideadvanced. After the blanks have been forced onto the shaft at the end ofthe rod 25 the clutch A is engaged with the pulley A and the rod isrevolved while the blanks are turned to the required size and shape andwhile the pintles p p are turned and burnished and the shaft severedfrom the rod, the end of the shaft or rod being supported during theaction of the turning and burnishing tools by supports or bearingscarried by the turret C and brought into engagement with the end of therod or shaft by indexing said turret and advancing the turret-slide. Thetools for acting upon the blanks and shaft or rod are carried upon theturret C, cross-slides D and E, and upon a turret F, mounted upon aslide F, located above the spindle A. The tools may be arranged uponthese carrying devices in any suitable manner and the mechanisms foroperating the carriers timed to bring the proper tools into action atthe proper times, the arrangement and timing which I will describe beingsuitable for the production of the character of piece shown in Fig. 9.After the blanks w w to have been forced onto the rod or shaft and thespindle is connected with the driving-pulley the turret C is indexed tobring the cutter C into position in front of the rod or shaft and theturret-slide is advanced, the cutter acting during the advance of theturret-slide to turn the outer edge of the blank 10 and form theshoulder to thereon. During the action of the cutter the outer end ofthe shaft or rod is supported in a bearing G which is carried by theturret and forced forward by a spring After the cutter C has acted theturret-slide is retracted and the turret indexed to bring the bearing Ccarried thereby, into position in front of the rod or shaft, and thenthe turret-slide is advanced to bring the bearing into engagement withthe outer end of the shaft and is held in this position during thesubsequent operations upon the blanks and shaft, so that the outer endof the shaft is supported during these operations. The sides of theblanks and the outer edges of the blanks w w are then turned by cuttersF F, carried in the turret F, after which the pintle p is turned by thecutter D on the slide D and the pintle p for the end of the next shaftis turned by the cutter E on the slide E. The pintles p p are thenburnished by a burnishing-tool F, carried by the turret F, after whichthe shaft is severed from the rod 6 by a cutter F carried by the turretF.

The mechanism employed for burnishing the part of the rod or shaftforming the pintles consists of two rolls F F, arranged to pass onopposite sides of the rod or shaft and subject the surface of the rod topressure as they pass laterally over the shaft, so that said shaft issubjected to a rolling pressure applied to opposite sides thereof, whichpolishes or burnishes the WVith this construction burnishing mechanismshaft at this part. and arrangement of .rear end of which carries theshaft or rod may or polished at any del be efficiently burnished siredpart and without subjecting the rod to an unbalanced pressure.

The turret-slide O is guided in ways C and is forced rearward by aspring 0 arranged in a recess in the frame and engaging a pin 0 on theslide. The slide is advanced at the proper times and its backwardmovement under the action of the spring is controlled bya cam (3 securedto the cam-shaft A, which engages the lower end of a lever 0 the upperend of which is connected with the slide 0 by a gear-segment 0 one partof which engages a rack G on the slide and the other part of whichengages a segment 0 formed on the upper end of the lever C The lever Cis provided with an arm 0, arranged in a different plane, and a cam 0similar to cam 0 maybe secured to the shaft A and act as a safety devicefor returning the slide 0 in case the spring 0 fails to act properly.The cam-shaft A is driven slowly during the ad vancing or feedingmovement of the turretslide, and when the turret-slide is to beretracted the shaft is speeded up or driven at a high speed to allow aquick return of the turret-slide. The cam-shaft is thus driven by theaction of two driving mechanisms, one of which runs continuously at aslow speed and the other of which runs continuously at a fast speed, oneor the other of said mechanisms being connected with said cam-shaft,according to the speed at which the shaft is to be driven. The speed ofthe fast-driving mechanism is constant, while the slow-driving mechanismis provided with means for varying the speed. The form of drivingmechanism which I prefer to employ is that embodied in the machine shownin the drawings. In this machine the cam-shaft A carries a gear I, whichis engaged by a pinion I, secured to a shaft 1 on which is keyed aclutch 1 arranged to connect said shaft either with a pulley I looselymounted on said shaft, or with a shaft 1 driven through a cone-pulley I.The pulley I is driven at a comparatively high speed and the shaft I isdriven at a comparatively slow speed in the same direction, the clutchbeing shifted to connect either the pulley or the shaft I with thecamshaft A, and the speed of the shaft I being varied, if desired, byshifting the belt on the cone-pulley I. The clutch I is automaticallyshifted at the proper times by action of cams 7;, carried by the drum Asecured to the cam-shaft A", the cams being arranged to act upon the endof an arm i connected with the front end of a shaft 2', the an arm 2'which is connected with the clutch I by a rod 1'. When the arm 2' ismoved in either direction by the cams 2, it is held in position untilshifted in the opposite direction by a springpressed arm 2' having aVshaped lug 2' which engages the V-shaped end of an arm 2', projectingfrom the arm 2' To enable the operation of the machine to be stopped byITO shifting the clutch'l into mid-position 'where it isdisconnectedvfrom both the'pulley l and the-shaft 1?, and-toalsoenablethe operative parts of the-machine when thus disconnected fromthe driving mechanism to beoperated manually without affecting theclutch I ,'the; armt is'connected with the shaftt fthrough adetachableconnection which'may' b'e' operated't'o disconnect the arm ifromthe'sha'ft '5. When the shaft and arm are discon-E nected,-thearnimay be oscillated' by the cams 5 v as the cam-shaft A 'is operatedmannallyj while the -clutc'h'-I is held in mid-position? Thedetachableconnectionbetween the arm= '5 'andthe shaft 1' and-the devicefor holding the clutchinmidrposition'are'preferablycon-. nec'tedtogether so that they'maybe operated Simultaneously, and the preferredform *of l these devices is that embodied in the-ma; chine shownand-isillustr'ated in Figs. 2 and 13. The arm i is loosely mounted onthef end of shaft 7}, and-the arm 1? isprovidedwith arecess 'formed ina-lug Wand arranged forf engagementwith a projectioni on the low'eriendofan arm or lever i which issecured- -to a collar 11 fast on sha'ftThe lever'is pivotedto the collard, and 'may be turne'don;itspivotto'connect or-disconnect it with'the arm t bya handled; formedat the upper: endof the lever. When engaged with the; armtithelevenmaybe held'in this position 1 by a catch 01, pivoted to thelever and ar-,

ranged-to engage the end of anarmcfl rising,

from the-collar r1 Thelower end of the'le-f ver i is provided witha'second projection '6", which may be engaged with a recess: formed in'alng-"i on the frame of the machine when the lever is disconnectedfrom;

the arm 71?, the recess being so located that the clutch i will be inits mid-position wheni the lever-is-engaged with said'recess. i Theturret C-isgiven a'partial revolutionf or-indexed'at the proper timesbym'echanism which starts the turretfrom -a stateof rest? withagradually-increasing rate of speed and? brings said-turret to a state ofrest with a; gradually-retarded speed, so that said turret? may beindeXed-rapidly'withoutjar or shook, 1 andthe turret is held in theposition intof which it is turned by'the indexing 1nechan-; ism by-alocking-pin, whichis withdrawn just E before'the indexing begins and isengaged: with asoc'ket inthe turret after the indexing iscompleted. Themechanism-which I have devised for thusindexin g and locking theturretis best shown in Figs. 10,11, and 12. The'i turret is providedwith a depending stud or pos't'M, mounted in a bearing'inthe slide-O andhaving a collar I or hub msecuredto its l lower end. The hub m carries'aseries of radial projections or teeth in theformofballs m, rnounted onradial studs secured in the; hub m, the numberof teeth or projections?corresponding to the number of partial rota-'1 tions given to the turretin eachcompletef revolution of'the turret, which in the machineshown isfive. When the turret-slide is in its eel- 45 retracted or indexingposition, one of the ballsm' isin .positiontobe acted upon by a cam mformed on an intermittently-revolving drum m mounted on a shaft m Thecam is in theform of a spirally-arrangedrib, whichpasses between'two ofthe projections m, and when 'the'drum m revolves'the cam m actsupon aball mfturn ing'theturret and bringing "the followin g ib'all m intoposition i's'so "shaped that it will start the turret with agradually=increasing'speedand'will stop the turret'witha gradually-retarded speed. I preferto providethree cams m on the drum m and togive the shaft m 'a third of'a revolution for each indexing of the"turret, although it'will'beunderstood'that Imay'use a single cam-m,*inwhichcase the shaft m will begiven a fullrevolutionfor'eachiindexing ofth'e'turret, orI may otherwise vary the number-ofcams employed, also varying the rotation of the shaft "m 'tosuitthenumber of cams employed. In order that "the turret "may be turned byhand, if desired, when in theindexing position, the front end ofa-cam'q'n is located a sufficient'di'stance inadvanceof the rear end of"a cam'm' to :allow theteeth orp'rojections on the turret to passbetween the ends ofthe cams as the turret is revolved by hand. The shaftm on'which the drum m ismounted, is'driven continuously'from theshaft'throughspiralgears m and the drum m is "'connectedwithsai'd shaftm when the indexingis to takeiplace and is disconnected from said shaftwhen the drum has made a third of -"a revolution. The drum m is securedto a sleeve mfl lo'osely'mounted on the shaft m and carrying at itsouter end a clutchsleevem", which is keyed to slide on the sleeve m andis forced toward a clutch-sleeve m secured'totheshaft'm by'a spring in".The

sleeve m7 isheld out of engagementwiththe sleeve m againstthe stress ofspring m by a pin m ,"arranged to engage a'cam m formed at one-side of acam-groove'm in the sleeve m There'are three cam-grooves m in the sleevem andwhen the'pin'm is =withdra'wn'from engagement with-a camm theclutch-sleeve m is-engaged with sleeve m and the drum m is revolveduntil the pin m enters the nextcam groove'm iwhen the cam 'm actsagainst said'pin to force the sleeve m back, the end of the cam-grooveengaging the pin and stopping the rotation of the sleeve and the'drumThe'pin m is carried on'the end-of one arm of a lever m the other arm ofwhich is arranged inthe path of a pin m on the turret-slide O, and saidpin is held in engagement with the'sleeve m by a spring m actingon thelever m When the turret-slide is retracted, the pin m acts on the leverm and withdraws the'pi-n m from engagement with the cam m, so that thedrum m is connected with the shaft m and rotates therewith to indexorrotate thet'ur'ret. During the indexing the slide 0 is moved forward asufficient distance to disengage the pin on and lever M so that the pinm enters the next groove 771 and cooperates with the cam m of thatgroove to disconnect the drum m from the shaft m and arrest the rotationof said drum. The drum is held in position until the next indexingmovement by a spring-pressed lever m having a V-shaped lug which engagesa V-shaped notch m in the sleeve m The turret C is locked in position onthe slide 0 between the indexing movements of the turret by aspring-pressed locking-pin M arranged to engage one of a series ofrecesses or sockets m formed in the turret. The pin is retracted againstthe stress of its spring to unlock the turret just previous to theindexing of the turret bya lever m the Vertical arm of which is broughtinto engagement with a pin m projecting from the frame, by the backwardmovement of the turret-slide. The turret may be partially surrounded bya shield 0 if desired, as shown in Figs. 1 and 3.

The cross-slide D is mounted in ways extending transversely of the frameof the machine and is forced outward or away from the work bya spring Dwhich is mounted in a recess in the frame and engages a pin D on theslide. The slide is advanced or moved inward by a cam D secured to theshaft A and arranged to engage the lower end of a lever D, the upper endof which engages the cross-slide. The cross-slide E is mounted in asimilar manner and is advanced by a cam E secured to the shaft A andarranged to engage the end of a lever E provided with a segment at itsupper end, which engages a segment E formed on a lever E the upper endof which engages the slide E. The slides D and E may be operatedmanually by handles D E inserted in sockets in the levers D The turret Fis mounted on a slide F,which is guided in a guideway formed in thesupport F rising from the front bearing of the spindle A, the turretbeing so arranged that its axis is parallel to the axis of the spindleand the slide being so arranged that the turret is moved toward and fromthe work in a direction at right angles to the axis of the spindle. Theslide F is held in the support F by a plate F", secured to the back ofthe slide and overlying the rear side of the support,and is retracted orforced upward by springs F mounted in recesses in the support F andengaging pins carried by the slide F and the plate F The slide isadvanced or given its movement to cause the tools carried by the turretto act upon the work by a cam F secured to the shaft A and arranged toact upon a lever F which is connected by means of a rod F with the outerend of a lever F, the other end of which is connected with the slide Fby a link F The lever F may be provided with an arm F arranged to beacted upon by a cam similar to the cam F and timed to retract the slideF in case the springs The turret F is given a partial revolution orindexed as it is retracted by means of a pawl pivoted to a bracketf onthe support F and provided with teeth for engaging the teeth of aratcl1et-wheelf secured to'the rear end of the post or stud f, by whichthe turret is supported in the slide F. The turret is locked between theindexing movements by a spring-pressed locking-lever f, the front end ofwhich is arranged to engage one of a series of recesses f", formed inthe turret F. The leverf is pivoted to the slide F, and its rear end isprovided with a lug or projection f arranged to cooperate with acam-plate f pivoted to the frame. When the slide F is in its retractedposition, the parts are in the positions shown in Fig. 5. When the slideis advanced, the pawl f is swung back as the ratchet-wheel movesforward, and the plate f swings on its pivot to allow the lever f topass by its inner end. After the ratchetwheel has advanced beyond thepawl the pawl swings into position to engage the ratchetwheel on thereturn movement of the slide, and after the lever has passed beyond theend of the plate f said plate swings into the position shown, where itis supported by a pin f hen the slide F is retracted, the lug f strikesthe end of plate f and is swung about its pivot, thus unlocking theturret, and as the lugis passing along the end of plate f theratchet-wheel is engaged by the pawl and given a partial revolution,bringing the succeeding recess f under the end of leverf so that whenthe lug passes off the end of plate f the lever is engaged with saidrecess and locks the turret, ready for the next forward movement.

The machine may be operated manually when the power is disconnected orwhen the clutch I is in mid-position by means of a hand-wheel W, securedto the front end of shaft m What I claim, and desire to secure byLetters Patent, is-- l. The combination of mechanism for holding androtatinga shaft, mechanism for forcing a blank onto said shaft, andmechanism for turning the blank operatively connected and combined toautomatically assemble the shaft and blank and to turn the blank.

2. The combination of mechanism for holding and rotatinga shaft,mechanism for forcing a blank onto said shaft, and mechanism for turningthe shaft operatively connected and combined to automatically assemblethe shaft and blank and to turn the shaft.

3. The combination of mechanism for hold- IIO ing and rotating ashaft,-mechanism for foreing a blank onto-said shaft, mechanism for;turning said blank, and mechanism for turn ing said shaft operativelyconnected and combined to automatically assemble the shaft and blank andto turn the blank andshaft. 4. The combination for holding and rotat-ling 'a rod of stock, mechanism for forcing blank onto said rod of stock,mechanism for; turning said blank, and mechanism for sev-l ering saidrod of stock. 5. Thecombination ofmechanism for hold-i ing and rotatinga rod of stock, mechanismi for forcinga blank onto said rod, mechanism,;for turning said blank, and mechanism for? :turning and severing saidrod of stock. a 6. Thecombination ofmechanism forhold-i eing'androtating a rod of stock, mechanisml ,for forcinga blank onto said rod,mechanismi for supporting :the outer end of said rod ,l zmechanismzforturning said blank, and mech-i vanism .for turning andsevering said rod.

7. The combination of mechanism for holding'and rotating a rod of stock,mechanism? for forcing a blank onto said rod, mechanismi ,for tnrningsaidbla-nk, mechanism for turn-'; ingza part of said rod, mechanismfor bur-'2 :nishi'ng-theturned part of said rod,and mechanism forsevering said rod.

8. The-combination of mechanism for hold-g ingiand rotating a rod ofstock, mechanismi for-forcing a blank onto said rod, mechanism for:turning said (blank, mechanism for sup- ;porting-the outer end of therod, mechanism? for .tunning apart of said rod, and mechanism forsevering the rod at the turned part. i

'9. iIhe-combination of mechanism for hold-; ingza rod or shaft, :of areciprocating blank-i carrier for forcing a blank onto said rod or;shaft operatively connected and combined toi automatically assemble theblank and shaft.

10; The combination of a mechanism for holding and rotatinga rodofstock, mechan- -iism .for intermittently feeding said rod, mech- I anismfor forcing a blank onto said rod, and mechanism for severing said rod.

11. The combination of a chuck for hold- .ing and rotatinga rod ofstock,mechanism for intermittently feeding said rod through said oh uck,ablank-carrier forforcing a blank onto said rod of stock, and cuttersfor turning said blank and for severing said rod of stock.

12. The combination of a chuck for holding and rotating a rod of stock,mechanism for intermittently feeding said rod through said chuck, ablank-carrier for forcing a blank onto said rod of stock, and cuttersfor turning said blank and rod andsevering said rod.

13. The combination of a chuck for holding and rotating a rod of stock,mechanism for intermittently feeding said rod through said chuck, ablank-carrier for forcing a blank onto said rod, cutters for turningsaid blank and rod and severing said rod, and mechanism for burnishingthe turned parts of said rod.

14. The combination of mechanism for holding a rod orshaft,'aseries-ofblankmolders, mechanism for bringing saidholderssuccessively into line with said rod, and mechvanism'for causing arelative movement between said rod and holders longitudinal of said rodto force blanks onto said rod.

15. The combination of mechanism for holding and rotating a shaft orrod, a series of blank-holders, mechanism for bringing said holderssuccessively into line with said rod, mechanism for causinga relativemovement between said rod and holders longitudinal of said rodto forceblanks onto said rod, and mechanism for turning said blanks.

16. The combination of mechanism for holding and'rotatinga rod ofstock,mechanism for intermittently'feeding said :rod forward, a series ofblank-holders, mechanism for bringing said holders successively :intoline with said rod, mechanism for causing a relative movement betweenraidrod and holders longitudinal of said rod to force blanks onto saidrod, and mechanism forsevering said rod.

17. The combination with a turretslide of a cam for controlling theforward and :return movement of-said slide, adrivingmechanismfor-driving said cam at a high speedduring the return of said slide, aseparate driving mechanism for driving said-camin the same direction ata slow speed during the advance of said slide, mechanism foralternately'connecting said driving mechanism with :said cam and meansfor varying thespeed of the slow-driving mechanism.

18. The combination with a turret-slide, of a cam for controlling theforward and return movements of said slide, a pulley driven at a highspeed, a shaft driven in the same direction ata slow speed, acone-pulley for driving said shaft, and a clutch for alternatelyconnecting the pulley and shaft with said cam.

19. The combination with a cam-shaft, of two driving mechanisms, aclutch for connecting either of said driving mechanisms with saidcam-shaft, a rock-shaft connected with said clutch, an arm operated by acam .on said cam-shaft, and a detachable connection between said arm andsaid rock-shaft.

20. The combination with a camshaft of two driving mechanisms, a clutchfor con-necting either of said driving mechanisms with said cam-shaft, arock-shaft connected with said clutch, an arm operated by a cam on saidcam-shaft, a lever secured to said rock-shaft, and arranged to either beengaged with said arm and connect it with said rock-shaft or to beengaged with a fixed part and hold the clutch out of engagement withboth driving mechanisms.

21. The combination with aturret, of means of indexing the samecomprising radial1yarranged projections or teeth, a cam-drun1,a seriesof cam-ribs on said drum for -successively engaging said projections,and means forintermittently giving the cam-drum a partial revolution.

22. The combination with a turret of means for indexing the samecomprising radiallyarranged projections or teeth, anintermittently-revolving cam-drum, a spirally-arranged cam thereon forengaging said projections, and a space between the ends of said cam toallow the rotation of said projections when said cam-drum is stationary.

23. The combination with rock-shaft 2' of an oscillating arm 11" looselymounted thereon, a collar 1' secured to said shaft, a lever 2' pivotedto said collar, an engaging recess and projection for connecting thelever 2' with the arm i and an engaging recess and projection forconnecting the lever and a fixed part.

24. The combination with a turret of means for indexing the samecomprising radiallyarranged teeth orprojections connected with theturret, and an intermittently-revolving cam for engaging saidprojections and shaped to start the turret with a gradually-increasingspeed and stop said turret with a retarded speed.

25. The combination with a turret,of means for indexing the samecomprising radiallyarranged teeth or projections connected with saidturret, and a spirally-arranged cam for engaging said projections andshaped to start the turret with a gradually-increasing speed and stopsaid turret with a retarded speed.

26. The combination with a turret of means for indexing the samecomprising radiallyarranged teeth or projections connected with saidturret, and a cam-drum having spirallyarranged ribs for passing betweensaid projections and rotating said turret, said ribs being shaped tostart said turret with a gradu ally-increasin g speed and stop saidturret with a retarded speed.

27. The combination with a reciprocating turret of means for indexingthe same comprising radially-arranged teeth or projections connectedwith the turret, and a spirally-arranged cam mounted in fixed positionfor engaging said projections when the turret is retracted.

28. The combination witha turret,of means for indexing the samecomprising radiallyarranged projections m, a cam-drum m havingspirally-arranged ribs 172 shaped to start said turret with agradually-increasing speed and stop said turret with a retarded speedand means forintermittently revolvingsaid drum.

29. The combination with a turret,of means for indexing the samecomprising radiallyarranged teeth or projections, anintermittently-revolving cam for engaging said projections having aspacebetween its ends to allow the rotation of said projections whensaid cam is stationary.

30. The combination with a work-carrying spindle, of a turret-slidearranged to slide in a direction at right angles to the axis of suchspindle, and a turret mounted in said slide with its axis parallel tothe axis of said spindle.

31. The combination with a Work-carrying spindle, of a vertically-movingturret-slide arranged above said spindle, and a turret carried by saidslide and having the axis parallel to the axis of the spindle.

32. The combination with a work-carrying spindle, of a turret-slidearranged to move in the direction of the spindle-axis, a turret mountedthereon, cutter-slides mounted to move transversely of the spindle-axis,a vertically-movable turret-slide mounted above the spindle, andmechanisms for operating said slides and turrets.

33. The combination of assembling mechanism and turning mechanismoperatively connected and combined to automatically assemble ablank andshaft and to turn the same.

34. The combination With a work-carrying spindle, of avertically-movable turret-slide mounted above said spindle, a cam-shaftbelow said spindle, a lever connected with said slide, a second leverconnected with said first lever and operated by a cam on said cam-shaft.

35. The combination with a work-carrying spindle, of avertically-movable turret-slide mounted above said spindle, a cam foroperating said slide mounted below said spindle, connections betweensaid cam and slide comprising a lever engaged by said cam, a leverconnected with said slide, and connections between said levers, andmeans for adjusting the connections between said cam and said slide.

In testimony whereof I have affixed my sig nature in presence of twoWitnesses.

WILLIAM S. DAVENPORT.-

Witnesses:

ELIZABETH O. WELSH, LILY F. DARCY.

